121020012201 has 32 divisors (see below), whose sum is σ = 182894601600. Its totient is φ = 70506938880.

The previous prime is 121020012187. The next prime is 121020012263. The reversal of 121020012201 is 102210020121.

It is not a de Polignac number, because 121020012201 - 2¹⁹ = 121019487913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121020012401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56956 + ... + 495261.

It is an arithmetic number, because the mean of its divisors is an integer number (5715456300).

Almost surely, 2^121020012201 is an apocalyptic number.

121020012201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121020012201 is a deficient number, since it is larger than the sum of its proper divisors (61874589399).

121020012201 is a wasteful number, since it uses less digits than its factorization.

121020012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552489.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121020012201 its reverse (102210020121), we get a palindrome (223230032322).

The spelling of 121020012201 in words is "one hundred twenty-one billion, twenty million, twelve thousand, two hundred one".